Peel, core and dice pears.
Mix pears and lemon juice in large kettle.
Add gelatin; bring to a rolling boil, stirring occasionally.
Add sugar; return to a full rolling boil.
Boil for 1 minute, stirring constantly.
Remove from heat; add pectin.
Stir and skim.
Ladle into sterilized jars to within 1 /2 inch of jar top; seal with paraffin.